Abstract:
A gripping head(1), a gripping system and a gripping method are disclosed. The gripping head(1) including a holding device(10) for applying holding force to a first part(P1), an acoustic pressure measurement device(11) for measuring a first acoustic pressure level of a first acoustic wave(W1) propagating from the first part(P1) resulted from a second acoustic pressure of a second acoustic wave(W2) ex-erted by an acoustic transducer against the first part (P1) held by the holding device (10), and a controller(12) for judging a contact of the first part(P1) with an second part(P2) using the measurement of the first acoustic pressure level output from the aco-ustic pressure measurement device(11). It is possible to detect contact of assembly p-arts(P1,P2) by measuring the acoustic pressure level of acoustic wave(W1,W2) tran-smitted from the gripped assembly part(P1,P2).
Abstract:
Systems, apparatus, and methods are disclosed for emergency lighting and evacuation. A building may include several emergency lighting stations in which at least some, if not all, of the lighting station includes a lighting device, a motion sensor, a speaker, a video camera, and a wireless access point. A controller adapter may provide power to and communicate with the lighting stations via Power-over-Ethernet (PoE) connections. A central controller may communicate with the controller adapter to control the emergency lighting stations through the PoE connections.
Abstract:
A unique system may include a power absorber; an electrical machine coupled to the power absorber and operative to supply mechanical power to the power absorber; a drive coupled to the electrical machine and operative to supply electrical power to drive the electrical machine; and a controller communicatively coupled to the drive. The controller may be configured to execute program instructions to selectively vary a control voltage while maintaining a given torque output of the electrical machine, and to determine, based on varying the control voltage, a minimum current required for the electrical machine to maintain the given torque output.
Abstract:
A transformer-less static synchronous series compensator (SSSC) for an AC electrical power transmission system having a transmission line carrying an AC current and a method for protection against electrical damage are provided. The transformer-less SSSC including: a voltage source converter (100) having a DC input and an AC output and being configured to generate an alternating voltage with controllable magnitude and controllable phase angle across the AC output, the AC output being configured to inject the generated alternating voltage into a phase of the transmission line; a filter circuit (101) being arranged coupled with the voltage source converter (100) in parallel across the AC output of the voltage source converter (100); a bypass circuit (102); and an electrical current limiting circuit (103) being coupled with the bypass circuit (102) in series; wherein: the series-coupled current bypass circuit (102) and electrical current limiting circuit (103) are coupled with a first capacitive element (1011) of the filter circuit (101) in parallel. The transient nature of the electrical current limiting circuit (103) will limit the increase in the current flowing through the thyristor of the bypass circuit (102) thus limit the current peak when the bypass circuit (102) is switched on. Consequently, the current limiting circuit (103) acts like limiting the current transients generated from the influences of both of the line fault current and the discharging current.
Abstract:
A method and device (200) of loop processing for an industrial process. The device (200) comprises: a pre-processing module (211), configured to pre-process a plurality of input process values (219a) based on a user predefined rule to obtain at least one processed process value, and a loop processing module (212) configured to perform a loop processing on the at least one processed process value. An automation device (200) in a standalone and simple design can be provided, achieving advanced control strategies and data processing at a low cost.
Abstract:
A method and an apparatus for fault detection in a mixed configuration power transmission line (10) comprising a plurality of sections (11, 12, 13) arranged between one end (S1) of the transmission line (10) and the other end (S2) of the transmission line (10) and comprising at least one overhead line section (11, 13) and at least one cable section (12) are disclosed. Based on a comparison travelling wave voltage or current time derivatives at the one end (S1) and the other end (S2) of the power transmission line (10) with selected threshold values, it is determined if there is a fault occurring in at least one cable section (12) of the power transmission line (10). Embodiments of the present invention utilize amplification of travelling wave voltages and/or currents which may occur at junctions (14, 15) between a cable section (12) and an adjacent overhead line section (11, 13) in determining if the fault occurs in a cable section (12) of the power transmission line (10).
Abstract:
A converter arrangement (60) is disclosed, which is configured to convey power from a first power system (61) to a second power system (62), or vice versa, wherein the second power system (62) has a nominal operating voltage frequency range and a nominal operating voltage amplitude range. The converter arrangement (60) comprises at least one converter module (63, 64, 65), which comprises at least one first converter unit (66, 73, 81) configured to, on basis of power conveyed from the first power system (61) and the nominal operating voltage frequency range, generate an amplitude-modulated voltage waveform having a selected frequency within the nominal operating voltage frequency range. The at least one converter module (63, 64, 65) comprises at least one transformer (67, 74, 82) configured to receive the amplitude-modulated voltage waveform and convert amplitude thereof on basis the nominal operating voltage amplitude range so as to generate an amplitude-modulated voltage waveform having the selected frequency within the nominal operating voltage frequency range and a selected amplitude within the nominal operating voltage amplitude range. The at least one converter module (63, 64, 65) comprises at least one second converter unit (68, 75, 83) configured to receive the amplitude-modulated voltage waveform generated by the at least one transformer (67, 74, 82) and on basis thereof generate a demodulated voltage waveform having a frequency within the nominal operating voltage frequency range and an amplitude within the nominal operating voltage amplitude range, wherein the at least one second converter unit (68, 75, 83) is electrically connected to the second power system (62).
Abstract:
Unique systems, methods, techniques and apparatuses of a robotic control system are disclosed. One exemplary embodiment is a robotic control system comprising a robot including a memory device, a sensor, a processing device, and a communication device. The processing device is structured to receive data from the sensor, compare the data from the sensor to the first 3D model, and identify differences between the data from the sensor and the first 3D model. The robotic control system also comprises a remote computing device located in a second workspace including a communication device, a memory device, a processing device structured to update the second 3D model of the workspace using the identified differences, and a user interface structured to receive user input and display the updated 3D model. The robot is structured to move in response to receiving the user input by way of the remote computing device.
Abstract:
It is presented a bypass switch for providing a bypass path between a first terminal and a second terminal. The bypass switch comprises: a first set of electrical contacts respectively connected to the first terminal and the second terminal; a second set of electrical contacts respectively connected to the first terminal and the second terminal; and a movable member. The movable member comprises a first conductive section, a second conductive section and an insulator between the first conductive section and the second conductive section, wherein the movable member is movable from an initial state, via a first state, to a second state, wherein in the initial state the first set of electrical contacts are conductively separated and the second set of electrical contacts are conductively separated, in the first state the first set of electrical contacts are conductively connected via the first conductive section and the second set of electrical contacts are conductively separated, and in the second state the second set of electrical contacts are conductively connected via the second conductive section.
Abstract:
It is presented a bypass switch for providing a bypass path between a first terminal and a second terminal. The bypass switch comprises: a first contact device; a second contact device; and a plunger being moveable from an initial state, via a first state, to a second state, wherein in the initial state the first terminal and second terminal are conductively separated; in the first state a movement of the plunger causes the first contact device to close a first conductive connection between the first terminal and the second terminal; and in the second state the plunger mechanically forces the second contact device to close a second conductive connection between the first terminal and the second terminal.